/*
 * Copyright 2012-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.assertj.core.error;

/**
 * Creates an error message indicating that an assertion that verifies that an object is an instance of some type
 * failed.
 *
 * @author Alex Ruiz
 * @author Joel Costigliola
 */
public class ShouldBeInstance extends BasicErrorMessageFactory {

  /**
   * Creates a new <code>{@link ShouldBeInstance}</code>.
   *
   * @param object the object value in the failed assertion.
   * @param type the type {@code object} is \nExpecting:\n to belong to.
   * @return the created {@code ErrorMessageFactory}.
   */
  public static ErrorMessageFactory shouldBeInstance(Object object, Class<?> type) {
    return object instanceof Throwable throwable ? new ShouldBeInstance(throwable, type) : new ShouldBeInstance(object, type);
  }

  /**
   * Creates a new <code>{@link ShouldBeInstance}</code> when object we want to check type is null.
   *
   * @param objectDescription the description of the null object we wanted to check type.
   * @param type the \nExpecting:\n type.
   * @return the created {@code ErrorMessageFactory}.
   */
  public static ErrorMessageFactory shouldBeInstanceButWasNull(String objectDescription, Class<?> type) {
    return new ShouldBeInstance(objectDescription, type);
  }

  private ShouldBeInstance(Object object, Class<?> type) {
    super("%n" +
          "Expecting actual:%n" +
          "  %s%n" +
          "to be an instance of:%n" +
          "  %s%n" +
          "but was instance of:%n" +
          "  %s",
          object, type, object.getClass());
  }

  private ShouldBeInstance(Throwable throwable, Class<?> type) {
    super("%n" +
          "Expecting actual throwable to be an instance of:%n" +
          "  %s%n" +
          "but was:%n" +
          "  %s",
          type, throwable);
  }

  private ShouldBeInstance(String objectDescription, Class<?> type) {
    super("%n" +
          "Expecting object:%n" +
          "  %s%n" +
          "to be an instance of:%n" +
          "  <%s>%n" +
          "but was null",
          objectDescription, type);
  }
}
